The rule changes have lead to hookers making more tackles and fatigue kills creativity.I don't think there is any great hookers at the moment.
A few years back Smith,Hodgson and Cook where elite. Cook while still good is on the way down. I wouldn't talk about Rheed or Api on those guys level. There just in strong sides and there isn't to many good hookers currently.
Talking about improvement - Wade Egan imo looked like he could be the one who comes good.